Auxiliary-bolt sash-fastener.



E. TROETEL.

AUXILIARY BOLT SASH PASTENBR.

APPLICATION FILED JAN. 9, 1912.

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A TTOR/VEYS UNITED STATES PATENT OFFICE.

ELIAS TROETEL, OF NEW YORK, N. Y., ASSIGNOR TO TROETEL BURGLAR ALARM-LOCK COMPANY, A CORPORATION OF NEW YORK.

AUXILIARY-BOLT SASH-FASTENER.

To all whom it may concern:

Be it known that I, ELIAs Tnon'rnn, a subject of the Queen of the Netherlands, res1ding in the borough of Bronx, 1n the cityot New York and State of New York, have 111- vented certain new and useful Improvements in Auxiliary-Bolt Sash-Fasteners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an improved form of burglar-proof lock tor wlndows, and has for its principal ob ect the provision of a simple, rellable and inexpensive means, which can easily be applied to window sashes already in use whereby the same may be securely locked in such a manner as to prevent the window from being unlocked from outside.

It is one advantage of my present invention that it permits the sash to be locked, either while closed or in any one of a number of partly open positions.

The improved lock comprises a suitable socket on one sash combined with a compound lock on the other sash which comprises a principal locking bolt, and an auxiliary lock adapted to prevent unlocking movement of the principal locking bolt when in engagement with said socket.

The invention is shown in a preferred embodiment in the accompanying drawings, wherein- Figure 1 is a front elevation of one side of a sash window provided with my invention, Fig. 2 is a vertical section of the same, Fig. 3 is a similar section of the lock itselt' shown closed, Fig. 4 is a similar view of the look when the sash is free, Fig. 5 is an elevation of the lock in the position shown in Fig. 4, Fig. (3 is a perspective view of the locking plate or escutcheon which closes the socket, and Fig. 7 is a similar view of the auxiliary locking member or bolt.

In the preferred form shown, the housing 10, contains the main sliding locking bolt 11, preferably flattened at its outer end 12 to facilitate handling and having its inner end hollow and recurved as shown at 13. The spring 14 tends continually to press the bolt 11 outward, or into the position shown, for instance, in Fig. 4.

WVithin the upper part of the housing 10 Specification of Letters Patent.

Application filed January 9, 1912.

Patented May 13, 1913. Serial No. 670,231.

there slides an auxiliary locking bolt 15, having a spring 16 tending to push it inward or toward the right in Figs. 3 and 4. By grasping the head 17 the bolt 15 can be drawn outward, and is held out by the rib 1.8, when the bolt 15 is turned so as to bring said rib out of registry with the offset opening or slot 1.). Normally the rib 18 registers with this offset to permit the bolt 15 to move inward, as shown in Fig. 3.

The housing 10 can be fixed on one side of the top of the lower window sash, and one or more chambers 20 are cut out of the side of the upper sash, such Cllilll'lbGI'S being closed in front each by a locking plate or a keeper 21, having an inclined slot 22 adapted to admit the entire recurved end of the main bolt 11. and also a hole 23 through which the tip o'tsuch recurved end projects forward when in the locked position shown in Fig. 3.

In order to unlock the window it is necessary, first to push the main bolt 11 inward against the effort of its spring 14 until it occupies the position indicated in dotted lines in Fig. 3. If the auxiliary bolt is not employed the window can then be unlocked by turning the main bolt so as to permit the spring l t to draw itforward out of the slot 22 in a keeper, so that it occupies the position shown in Fig. 4. My broad invention covers the lock whether used with or without the auxiliary bolt. I prefer, however, to employ this auxiliary for greater protection. As shown in Fig. 3, when the window is locked, the tip of this bolt enters the hollow end of the recurved main bolt; and, when said main bolt is pushed inward, the spring 16 causes the bolt 15 to follow inward so as to preserve this engagement; thus preventing the main bolt from being turned so as to free it, even when pushed inward.

In order to unlock the window the auxiliary bolt is first drawn inward and revolved so as to bring the rib 18 away from the notch 19, whereby the auxiliary bolt is held back. The main bolt can then be pushed outward and revolved so as to be freed in the manner already described. The rib 18 or its equivalent is not essential to the use of the auxiliary bolt in my invention.

By using two or more sockets, either on one or both sides of a sash, the window may be locked in a number of positions. It is to be understood that my invention is ap plicable to locking sliding gates, doors, etc., as well as windows.

Various changes may be made in the structure and arrangement of my lock,without departing from the scope of my invention, and I do not limit myself to the details as herein shown and described.

WVhat I claim is- 1. In a fastener, a housing, a main bolt slidably and revolubly mounted therein and having a recurved end, an auxiliary bolt adapted to engage said recurved end, and a keeper adapted to cooperate with said 1 bolts, substantially as described.

2. In a fastener, a housing, a main bolt slidably and revolubly mounted therein and having a recurved end, a spring tending to draw said bolt inward, an auxiliary bolt adapted to engage said recurved end, a spring tending to press said bolt outward, and a keeper adapted to cooperate with said bolts, substantially as described.

3. In a fastener, a housing, a main bolt slidably and revolubly mounted therein and having a recurved end, a keeper having a slot for receiving said bolt and a hole for eceiving the recurved tip thereof, and an auxiliary bolt in said housing adapted to engage the tip of said main bolt, substantially as described.

4. In a fastener, a housing, a main bolt slidably and revolubly mounted therein and having a recurved end, a keeper having a slot for receiving said bolt and a hole for receiving the recurved tip thereof, an auxiliary bolt in said housing adapted to engage the tip of said main bolt, and a spring adapted to press said auxiliary bolt inward through the hole in said keeper, substantially as described.

In a-fastener, a slidable and revoluble main bolt having a recurved hollow end, a keeper having a suitable opening for admitting said bolt, and an auxlliary bolt adapted to enter the hollow end of said main bolt 'for locking the same, substantially as described.

6. In a fastener, a slidable and revoluble main bolt having a recurved hollow end, a keeper having va suitable slot for admitting the main bolt and a hole for receiving the recurved tip thereof, and an auxiliary bolt adapted to enter the hollow in said recurved end and to pass through said hole in the keeper, substantially as described.

In testimony whereof, I afliX my signature, in presence of two Witnesses.

. ELIAS TROETEL.

Vitnesses PAUL A J UNKER, KATHARINE C. MEAD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 1). C. 

